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Found 6 results

  1. Recently replaced my Thermostat and water pump and radiator cap now I notice the temperature gauge jitters around regardless of if the engine is cool or warm. there is also a pinhole leak in the radiator near the oil cooling inlet hose. Before I get a diagnosis/opinion I feel I should state the radiator has that Bars Copper flake stop leak in it and I tried to patch the leak on the outside using JB Weld (neither of which worked) My theories are #1 The Stop Leak has somehow stopped the thermostat from completely closing or the thermostat was faulty when installed (thermostat been installed for a month and this problem has only been happening for 3 days) #2 the radiator leak is causing it (yet again the leak has been present much longer than the gauge jitter. #3 there is air stuck in the cooling system. Going to replace the thermostat this weekend and the radiator within the next month but wanted to ask is there anything else that could be causing this issue
  2. At random times my "low coolant" light comes on. The temp gage will show around half way 220 I think. Just had the oil changed and everything looked normal. I check the coolant and it shows normal. Any idea. 2001 gmc sierra 1500.
  3. 99 Silverado, 198k miles, original pump and thermostat and the pump started leaking. I'm going to replace. Looks like a 4 hour job for a non-pro, you guys agree? While I'm in there, I'm thinking I should replace serpentine belt and thermostat since they are originals. One major question I have: does the new pump typically come with a gasket plate or do I have to buy gaskets separately? Also, gaskets on dry or with sealer? thanks, chris
  4. Gents, I've got a head scratcher. My 2000 Suburban 2500 is displaying some strange heater/cooling system issues. Last week my heater started going cold while at idle or lower rpm. As i get past 40, the heat instantly gets hotter and then back to lukewarm at stoplights and such. I haven't seen any of the typical water pump indicators. There's no antifreeze smell or puddle on the floor and the truck still maintains perfect temp while driving. I threw in a new thermostat and topped off the dexcool. The radiator and coolant are only about 6 months old. Aside from the loss of coolant from swapping the t-stat, the system was full. To add to the head scratching, while I was at a stoplight this morning and my front heat started to go cold, I felt the rear vents and they were as hot as could be. So, all signs are pointing to good flow from the water pump. Since the condition appears to be rpm dependent, I'm thinking water pump. But without any of the typical indicators, it doesn't seem to be the culprit. And since I do get hot air on occasion, the air blender door doesn't make sense, as I've got good modulation from hot to cold. A broken heater core doesn't fit either, as that would have been an easy one to diagnose. I'm thinking maybe a partially blocked heater core. To me it makes the most sense, as I would assume the faster the water pump spins, the more it's able to overcome whatever blockage is present. Or am I just thinking about it too much and I should just throw on another water pump and see what happens?
  5. Hi, I have a 2000 GMC Sierra with a 5.3L. Last year the temperature gauge on the truck started to read a high temperature, I changed the thermostat and topped up coolant and never had the problem again. Until recently, the gauge started to read high again (not overheating though). I'm finding that at low speeds (40km/h and below) the temperature reads normal. As I got higher (up to 90km/h) the temperature starts to raise from 95-115. then cools right down when I come to a complete stop. Now the weird part of it is that whn I go on the highway the temperature will rise as i accelerate onto the highway, then after a couple minutes over 100km/h, the temperature falls right back down to normal. Then when I come off the highway, slowing down to anything under 80km/h the temperature rises again. Why could this be? Thermostat? Waterpump? Coolant? Cursed? I'm lost..
  6. Hello everybody I would like to replace my thermostat on 2007 GMC Savana 3500 6.6 Duramax. I would like to get help if one of you know where thermostat located?? I loooked at you tube but I am not sure will be the same most of them in you tube are pick up trucks. Thank you very much in advance.
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